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<h2><span class="refentrytitle">Class template cached_node_allocator</span></h2>
<p>boost::interprocess::cached_node_allocator</p>
</div>
<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../interprocess/indexes_reference.html#header.boost.interprocess.allocators.cached_node_allocator_hpp" title="Header <boost/interprocess/allocators/cached_node_allocator.hpp>">boost/interprocess/allocators/cached_node_allocator.hpp</a>>
</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> SegmentManager<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> NodesPerBlock<span class="special">></span>
<span class="keyword">class</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="comment">// types</span>
<span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">segment_manager</span> <a name="boost.interprocess.cached_node_allocator.segment_manager"></a><span class="identifier">segment_manager</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">segment_manager</span><span class="special">::</span><span class="identifier">void_pointer</span> <a name="boost.interprocess.cached_node_allocator.void_pointer"></a><span class="identifier">void_pointer</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">pointer</span> <a name="boost.interprocess.cached_node_allocator.pointer"></a><span class="identifier">pointer</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">const_pointer</span> <a name="boost.interprocess.cached_node_allocator.const_pointer"></a><span class="identifier">const_pointer</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">T</span> <a name="boost.interprocess.cached_node_allocator.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a name="boost.interprocess.cached_node_allocator.reference"></a><span class="identifier">reference</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a name="boost.interprocess.cached_node_allocator.const_reference"></a><span class="identifier">const_reference</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">SegmentManager</span><span class="special">::</span><span class="identifier">size_type</span> <a name="boost.interprocess.cached_node_allocator.size_type"></a><span class="identifier">size_type</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">SegmentManager</span><span class="special">::</span><span class="identifier">difference_type</span> <a name="boost.interprocess.cached_node_allocator.difference_type"></a><span class="identifier">difference_type</span><span class="special">;</span>
<span class="comment">// member classes/structs/unions</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T2<span class="special">></span>
<span class="keyword">struct</span> <a class="link" href="cached_node_allocator/rebind.html" title="Struct template rebind">rebind</a> <span class="special">{</span>
<span class="comment">// types</span>
<span class="keyword">typedef</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a><span class="special"><</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager</span> <span class="special">></span> <a class="link" href="cached_node_allocator/rebind.html#boost.interprocess.cached_node_allocator.rebind.other"><span class="identifier">other</span></a><span class="special">;</span>
<span class="special">}</span><span class="special">;</span>
<span class="comment">// <a class="link" href="cached_node_allocator.html#boost.interprocess.cached_node_allocatorconstruct-copy-destruct">construct/copy/destruct</a></span>
<a class="link" href="cached_node_allocator.html#idp43113888-bb"><span class="identifier">cached_node_allocator</span></a><span class="special">(</span><span class="identifier">segment_manager</span> <span class="special">*</span><span class="special">)</span><span class="special">;</span>
<a class="link" href="cached_node_allocator.html#idp43116160-bb"><span class="identifier">cached_node_allocator</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T2<span class="special">></span>
<a class="link" href="cached_node_allocator.html#idp43118832-bb"><span class="identifier">cached_node_allocator</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a><span class="special"><</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager</span><span class="special">,</span> <span class="identifier">NodesPerBlock</span> <span class="special">></span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T2<span class="special">,</span> <span class="keyword">typename</span> SegmentManager2<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> N2<span class="special">></span>
<a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">&</span>
<a class="link" href="cached_node_allocator.html#idp43055136-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a><span class="special"><</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager2</span><span class="special">,</span> <span class="identifier">N2</span> <span class="special">></span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">&</span> <a class="link" href="cached_node_allocator.html#idp43060592-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<a class="link" href="cached_node_allocator.html#idp43123152-bb"><span class="special">~</span><span class="identifier">cached_node_allocator</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// <a class="link" href="cached_node_allocator.html#idp43063776-bb">public member functions</a></span>
<span class="identifier">node_pool_t</span> <span class="special">*</span> <a class="link" href="cached_node_allocator.html#idp43064336-bb"><span class="identifier">get_node_pool</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">segment_manager</span> <span class="special">*</span> <a class="link" href="cached_node_allocator.html#idp43065904-bb"><span class="identifier">get_segment_manager</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">size_type</span> <a class="link" href="cached_node_allocator.html#idp43067472-bb"><span class="identifier">max_size</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">pointer</span> <a class="link" href="cached_node_allocator.html#idp43069056-bb"><span class="identifier">allocate</span></a><span class="special">(</span><span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">cvoid_pointer</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43072784-bb"><span class="identifier">deallocate</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">size_type</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43075456-bb"><span class="identifier">deallocate_free_blocks</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="identifier">pointer</span> <a class="link" href="cached_node_allocator.html#idp43076752-bb"><span class="identifier">address</span></a><span class="special">(</span><span class="identifier">reference</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">const_pointer</span> <a class="link" href="cached_node_allocator.html#idp43079008-bb"><span class="identifier">address</span></a><span class="special">(</span><span class="identifier">const_reference</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43081264-bb"><span class="identifier">construct</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">const_reference</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43083952-bb"><span class="identifier">destroy</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="identifier">size_type</span> <a class="link" href="cached_node_allocator.html#idp43085936-bb"><span class="identifier">size</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">pointer</span> <a class="link" href="cached_node_allocator.html#idp43088336-bb"><span class="identifier">allocation_command</span></a><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">interprocess</span><span class="special">::</span><span class="identifier">allocation_type</span><span class="special">,</span> <span class="identifier">size_type</span><span class="special">,</span>
<span class="identifier">size_type</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">pointer</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43091968-bb"><span class="identifier">allocate_many</span></a><span class="special">(</span><span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">multiallocation_chain</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43095600-bb"><span class="identifier">allocate_many</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">size_type</span> <span class="special">*</span><span class="special">,</span> <span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">multiallocation_chain</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43099040-bb"><span class="identifier">deallocate_many</span></a><span class="special">(</span><span class="identifier">multiallocation_chain</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="identifier">pointer</span> <a class="link" href="cached_node_allocator.html#idp43101296-bb"><span class="identifier">allocate_one</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="identifier">multiallocation_chain</span> <a class="link" href="cached_node_allocator.html#idp43103424-bb"><span class="identifier">allocate_individual</span></a><span class="special">(</span><span class="identifier">size_type</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43105696-bb"><span class="identifier">deallocate_one</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43107824-bb"><span class="identifier">deallocate_individual</span></a><span class="special">(</span><span class="identifier">multiallocation_chain</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43110096-bb"><span class="identifier">set_max_cached_nodes</span></a><span class="special">(</span><span class="identifier">size_type</span><span class="special">)</span><span class="special">;</span>
<span class="identifier">size_type</span> <a class="link" href="cached_node_allocator.html#idp43112160-bb"><span class="identifier">get_max_cached_nodes</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="comment">// <a class="link" href="cached_node_allocator.html#idp43123936-bb">friend functions</a></span>
<span class="keyword">friend</span> <span class="keyword">void</span> <a class="link" href="cached_node_allocator.html#idp43124496-bb"><span class="identifier">swap</span></a><span class="special">(</span><span class="identifier">self_t</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">self_t</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp276457984"></a><h2>Description</h2>
<div class="refsect2">
<a name="idp276458400"></a><h3>
<a name="boost.interprocess.cached_node_allocatorconstruct-copy-destruct"></a><code class="computeroutput">cached_node_allocator</code>
public
construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a name="idp43113888-bb"></a><span class="identifier">cached_node_allocator</span><span class="special">(</span><span class="identifier">segment_manager</span> <span class="special">*</span> segment_mngr<span class="special">)</span><span class="special">;</span></pre>
<p>Constructor from a segment manager. If not present, constructs a node pool. Increments the reference count of the associated node pool. Can throw <code class="computeroutput"><a class="link" href="bad_alloc.html" title="Class bad_alloc">boost::interprocess::bad_alloc</a></code> </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp43116160-bb"></a><span class="identifier">cached_node_allocator</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">&</span> other<span class="special">)</span><span class="special">;</span></pre>
<p>Copy constructor from other <code class="computeroutput"><a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a></code>. Increments the reference count of the associated node pool. Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T2<span class="special">></span>
<a name="idp43118832-bb"></a><span class="identifier">cached_node_allocator</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a><span class="special"><</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager</span><span class="special">,</span> <span class="identifier">NodesPerBlock</span> <span class="special">></span> <span class="special">&</span> other<span class="special">)</span><span class="special">;</span></pre>
<p>Copy constructor from related <code class="computeroutput"><a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a></code>. If not present, constructs a node pool. Increments the reference count of the associated node pool. Can throw <code class="computeroutput"><a class="link" href="bad_alloc.html" title="Class bad_alloc">boost::interprocess::bad_alloc</a></code> </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T2<span class="special">,</span> <span class="keyword">typename</span> SegmentManager2<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> N2<span class="special">></span>
<a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">&</span>
<a name="idp43055136-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a><span class="special"><</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager2</span><span class="special">,</span> <span class="identifier">N2</span> <span class="special">></span> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
<p>Not assignable from related <code class="computeroutput"><a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a></code> </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">&</span> <a name="idp43060592-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
<p>Not assignable from other <code class="computeroutput"><a class="link" href="cached_node_allocator.html" title="Class template cached_node_allocator">cached_node_allocator</a></code> </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp43123152-bb"></a><span class="special">~</span><span class="identifier">cached_node_allocator</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Destructor, removes node_pool_t from memory if its reference count reaches to zero. Never throws </p>
</li>
</ol></div>
</div>
<div class="refsect2">
<a name="idp276524240"></a><h3>
<a name="idp43063776-bb"></a><code class="computeroutput">cached_node_allocator</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="identifier">node_pool_t</span> <span class="special">*</span> <a name="idp43064336-bb"></a><span class="identifier">get_node_pool</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a pointer to the node pool. Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">segment_manager</span> <span class="special">*</span> <a name="idp43065904-bb"></a><span class="identifier">get_segment_manager</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns the segment manager. Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">size_type</span> <a name="idp43067472-bb"></a><span class="identifier">max_size</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns the number of elements that could be allocated. Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">pointer</span> <a name="idp43069056-bb"></a><span class="identifier">allocate</span><span class="special">(</span><span class="identifier">size_type</span> count<span class="special">,</span> <span class="identifier">cvoid_pointer</span> hint <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>
<p>Allocate memory for an array of count elements. Throws <code class="computeroutput"><a class="link" href="bad_alloc.html" title="Class bad_alloc">boost::interprocess::bad_alloc</a></code> if there is no enough memory </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43072784-bb"></a><span class="identifier">deallocate</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span> ptr<span class="special">,</span> <span class="identifier">size_type</span> count<span class="special">)</span><span class="special">;</span></pre>
<p>Deallocate allocated memory. Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43075456-bb"></a><span class="identifier">deallocate_free_blocks</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Deallocates all free blocks of the pool </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">pointer</span> <a name="idp43076752-bb"></a><span class="identifier">address</span><span class="special">(</span><span class="identifier">reference</span> value<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns address of mutable object. Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_pointer</span> <a name="idp43079008-bb"></a><span class="identifier">address</span><span class="special">(</span><span class="identifier">const_reference</span> value<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns address of non mutable object. Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43081264-bb"></a><span class="identifier">construct</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span> ptr<span class="special">,</span> <span class="identifier">const_reference</span> v<span class="special">)</span><span class="special">;</span></pre>
<p>Default construct an object. Throws if T's default constructor throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43083952-bb"></a><span class="identifier">destroy</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span> ptr<span class="special">)</span><span class="special">;</span></pre>
<p>Destroys object. Throws if object's destructor throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">size_type</span> <a name="idp43085936-bb"></a><span class="identifier">size</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span> p<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns maximum the number of objects the previously allocated memory pointed by p can hold. This size only works for memory allocated with allocate, allocation_command and allocate_many. </p>
</li>
<li class="listitem"><pre class="literallayout"><span class="identifier">pointer</span> <a name="idp43088336-bb"></a><span class="identifier">allocation_command</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">interprocess</span><span class="special">::</span><span class="identifier">allocation_type</span> command<span class="special">,</span>
<span class="identifier">size_type</span> limit_size<span class="special">,</span>
<span class="identifier">size_type</span> <span class="special">&</span> prefer_in_recvd_out_size<span class="special">,</span>
<span class="identifier">pointer</span> <span class="special">&</span> reuse<span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43091968-bb"></a><span class="identifier">allocate_many</span><span class="special">(</span><span class="identifier">size_type</span> elem_size<span class="special">,</span> <span class="identifier">size_type</span> num_elements<span class="special">,</span>
<span class="identifier">multiallocation_chain</span> <span class="special">&</span> chain<span class="special">)</span><span class="special">;</span></pre>
<p>Allocates many elements of size elem_size in a contiguous block of memory. The minimum number to be allocated is min_elements, the preferred and maximum number is preferred_elements. The number of actually allocated elements is will be assigned to received_size. The elements must be deallocated with deallocate(...) </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43095600-bb"></a><span class="identifier">allocate_many</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">size_type</span> <span class="special">*</span> elem_sizes<span class="special">,</span> <span class="identifier">size_type</span> n_elements<span class="special">,</span>
<span class="identifier">multiallocation_chain</span> <span class="special">&</span> chain<span class="special">)</span><span class="special">;</span></pre>
<p>Allocates n_elements elements, each one of size elem_sizes[i]in a contiguous block of memory. The elements must be deallocated </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43099040-bb"></a><span class="identifier">deallocate_many</span><span class="special">(</span><span class="identifier">multiallocation_chain</span> <span class="special">&</span> chain<span class="special">)</span><span class="special">;</span></pre>
<p>Allocates many elements of size elem_size in a contiguous block of memory. The minimum number to be allocated is min_elements, the preferred and maximum number is preferred_elements. The number of actually allocated elements is will be assigned to received_size. The elements must be deallocated with deallocate(...) </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">pointer</span> <a name="idp43101296-bb"></a><span class="identifier">allocate_one</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Allocates just one object. Memory allocated with this function must be deallocated only with deallocate_one(). Throws <code class="computeroutput"><a class="link" href="bad_alloc.html" title="Class bad_alloc">boost::interprocess::bad_alloc</a></code> if there is no enough memory </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">multiallocation_chain</span> <a name="idp43103424-bb"></a><span class="identifier">allocate_individual</span><span class="special">(</span><span class="identifier">size_type</span> num_elements<span class="special">)</span><span class="special">;</span></pre>
<p>Allocates many elements of size == 1 in a contiguous block of memory. The minimum number to be allocated is min_elements, the preferred and maximum number is preferred_elements. The number of actually allocated elements is will be assigned to received_size. Memory allocated with this function must be deallocated only with deallocate_one(). </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43105696-bb"></a><span class="identifier">deallocate_one</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&</span> p<span class="special">)</span><span class="special">;</span></pre>
<p>Deallocates memory previously allocated with allocate_one(). You should never use deallocate_one to deallocate memory allocated with other functions different from allocate_one(). Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43107824-bb"></a><span class="identifier">deallocate_individual</span><span class="special">(</span><span class="identifier">multiallocation_chain</span> it<span class="special">)</span><span class="special">;</span></pre>
<p>Allocates many elements of size == 1 in a contiguous block of memory. The minimum number to be allocated is min_elements, the preferred and maximum number is preferred_elements. The number of actually allocated elements is will be assigned to received_size. Memory allocated with this function must be deallocated only with deallocate_one(). </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp43110096-bb"></a><span class="identifier">set_max_cached_nodes</span><span class="special">(</span><span class="identifier">size_type</span> newmax<span class="special">)</span><span class="special">;</span></pre>
<p>Sets the new max cached nodes value. This can provoke deallocations if "newmax" is less than current cached nodes. Never throws </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">size_type</span> <a name="idp43112160-bb"></a><span class="identifier">get_max_cached_nodes</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns the max cached nodes parameter. Never throws </p>
</li>
</ol></div>
</div>
<div class="refsect2">
<a name="idp276672608"></a><h3>
<a name="idp43123936-bb"></a><code class="computeroutput">cached_node_allocator</code> friend functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">void</span> <a name="idp43124496-bb"></a><span class="identifier">swap</span><span class="special">(</span><span class="identifier">self_t</span> <span class="special">&</span> alloc1<span class="special">,</span> <span class="identifier">self_t</span> <span class="special">&</span> alloc2<span class="special">)</span><span class="special">;</span></pre>
<p>Swaps allocators. Does not throw. If each allocator is placed in a different memory segment, the result is undefined. </p>
</li></ol></div>
</div>
</div>
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<td align="right"><div class="copyright-footer">Copyright © 2005-2015 Ion Gaztanaga<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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